without net metering, you need to make sure you're pushing to a leg that has a draw greater than your production. My home office draws a steady 600w of power off a single circuit. Combined with other circuits idle draw, it never dips below 1000w. I hooked 960w of solar up to the inverter and plugged it into that leg. 4x240 panels on my back porch south facing in a non-optimal angle I've seen as much as 750w production on them flowing through the inverter. I can see in my daily consumption from my power company the days that are sunny vs the days that are not. It's been 3 months and it has had an error once. I turned it off, disconnected cables, reconnected, and fired it up. After a few seconds flashing red and green, it went to solid green then blinking green, which means it's pushing power.